全电动注塑机的特点与应用

全电动注塑机以其独特的先进技术,今天已普遍应用于生产高精度制品,尤其是在加工光学应用部件、微型部件和多组分部件等方面独占鳌头。     

新型全电动注塑机

为了满足对全电动注塑机日益增长的需求，法国注塑机制造商Billion S．A．S．开发出了自己的电力技术Selectse—ries。Select series机器具有紧凑的结构，并节约能源（与液压注塑机相比可节约30％～70％）。它们都配备了精密电子驱动器，可用于多组分聚合物的生产。     

电动注塑机与液压注塑机共创注塑机新发展

分析电动注塑机的发展现状及性能优势,比较电动注塑机与液压注塑机两者在结构、注射成型范围等方面的技术特点,指出液压注塑机应向多功能、多品种方向发展,并且应注重节能技术;电动注塑机应向高附加值的精密注塑机方向发展。     

新型全电动注塑机

公司推出的ELION系列全电动注塑机主要是为精密机械、医疗、电气、汽车行业的模计的。注塑机包括合模力为500kN、800kN、1200kN和1750kN4种型号。4种注射装置的16mm～50mm，适用于组合式系统。该系列注塑机为高效率设备，其空循环时间仅为由于其采用了座标轴原理，因而可对各机械装置采用闭环控制，并可与其它轴同步。机采用水冷伺服电机，因而不会产生热量和灰尘，且噪音低。     

LGE 系列电动注塑机

LS机械有限公司的LGE系列电动注塑机具有如下优点：     

华大机械有限公司推出全电动注塑机及二板机

华大机械有限公司,专门生产塑胶注射成形机、立式橡胶注射机、机械臂及有关辅助设备。华大机械的产品包括：一系列多功能及可靠的注射成形机,大小规格多达18种,锁模力由25吨至3000吨,每台机均可配备可编程控制系统或电脑系统。TTI-2500特大形注塑机被中国科委确认为国家级火炬计划项目,合模力为1000-3200吨。     

试制品用新型真空注塑机

日本三爱集团日前推出面向试制品加工的真空注塑机SC系列。据称，该系列非常适合医疗器械类等年供货量仅几百件的小批量产品。     

海天推出全电动注塑机Mercury

德国EBERMANNSDORF消息(2009年12月1日)注塑机巨头海天集团旗下的Zhafir公司已经成功研发出全电动注塑机Mercury。Zhafir上月底在该公司位于E-bermannsdorf的43055平方米的新     

诱导式全电动注塑机

诱导式全电动注塑机使用的特制诱导电机和独特控制技术方案是注塑机行业的一个创举。在电气方面其成本可降低50％左右，整机成本降低20％～30％。机器的控制性能比油压注塑机有大幅度的提高，且不逊于国内厂家开发的通常概念的永磁全电动注塑机，在稳定性和寿命方面更有其优势。     

日本电动注塑机抢占北美市场

据统计，目前北美注塑机市场中有25％为全电动注塑机。全电动注塑机将成为注射机市场的主流。日本电动注塑机供应商已经抢占了有利的市场地位，并将继续巩固。欧洲的电动注塑机企业也试图在日益增长的北美电动注塑机市场分得更大的份额，尤其在目前欧洲电动注塑机市场不景气的关头，欧洲电动注塑机生产商更是将发展重点转移     

Injection molding PVC

Injection molding rigid PVC is no longer the chore it once was. Advances in resin properties, additive systems, and molding equipment have allowed injection molders to take advantage of PVC's favorable economic, weatherability, flame retardant, and chemical resistant properties. As a result, injection molding of PVC is entering a new era. With the proper equipment and formulations, today's PVC molder is graduating from pipe fittings to ever more profitable, yet demanding, parts and applications.     

提高注塑件性能的熔体振荡技术

目前有一种新开发的注射熔体振荡技术,无需添加填料和助剂,就可提高注塑部件的机械特性。这项技术还可转移、隐藏或减少部件表面的注射熔接痕,并纠正制件取向应力等缺陷。     

Injection molding electroluminescent components

This article explores the feasibility of using mass manufacture, namely injection molding, as a route to produce cost effective electroluminescent (EL) components straight from the mold tool. EL screen printing pastes were adapted and introduced into the injection molding environment as a multilayer structure. Four‐layer systems were investigated using a spray deposition method to apply individual layer components directly in‐mold. Finally, the substrate was back injected to produce a three‐dimensional illuminating device straight from the mold tool. Materials, methods, and outcomes are described, the implication being that electronic manufacture could be moved upstream and performed in‐mold with resultant cost and energy savings. POLYM. ENG. SCI., 2013. © 2012 Society of Plastics Engineers     

注压法和模压法对液体硅橡胶物理机械性能影响之比较

液体硅橡胶具有可成型形状复杂的制品、加工便捷高效、成本低效益好的特点研究发现,不同的成型方法对硫化胶性能几乎没有影响。     

Injection blow molding PVC containers

This paper discusses product design, tool design, tooling, processing parameters, and machine and tool maintenance for injection blowmolding PVC containers. Product design details geometric shapes, engraving, and sharp area definition. Tool design offers pros and cons of temperature control core rods vs. conventional core rods. Tooling defines types of steel to inhibit rust. Processing parameters detail times, pressures, and temperatures to inhibit polymer breakdown that causes material burning. Machine and tool maintenance defines preventative maintenance for both, for longevity.     

Injection molding in disk-shaped cavities

Experimental results together with predictions based on a numerical simulation are reported for the filling by injection molding of a center gated, disk-shaped cavity with acrylonitrile-butadiene-styrene terpolymer (Lustran ABS Q714) and with polypropylene (Pro-fax 6523). At a specified fractional fill, the output of a pressure transducer (Δπ_zz) near the sprue was measured and the clamp force (F) was obtained by. integrating the output of four pressure transducers over the projected area. A systematic study was made to determine the effect of the (1) material properties, (2) cavity thickness, (3) melt temperature in the barrel, and (4) injection rate on the measured and simulated values for the pressure transducer output and clamp force. For a given barrel temperature, cavity thickness and intermediate-to-high injection rates, the pressure transducer output and clamp force were found to be nearly independent of injection rate for ABS and to increase with increasing injection rate for polypropylene. As the injection rate approached zero, the pressure transducer output and clamp force increased because of the long time available for cooling the flowing melt. For ABS the simulated results were about 5-25 percent higher than experiment, whereas for polypropylene they were about 10 percent lower than experiment when the viscosity model included solidification Flow instabilities were observed to occur at conditions where the pressure transducer output curve showed a marked upturn with decreasing injection rate.     

Injection molding plant for ceramic production

An injection molding plant for the production of long ceramic articles is described, including the functional principle and operating parameters.     

Injection molding of unsaturated polyester compounds

A bulk-molding compound made of unsaturated polyester resin, glass fiber, calcium carbonate fillers, and low profile additives is studied. The viscosity of the compound in the absence of cure reaction is measured by capillary rheometry. The compound exhibits a shear-thinning behavior. Injection molding in a rectangular plaque equipped with pressure transducers shows that the crosslinking reaction can begin during mold filling for low flow rate or high mold temperature. Fiber orientation in the plaque is complex as the reinforcement appears under two aspects, bundles or filaments. Their lengths and orientations are different. A layered structure throughout the thickness is observed at the mold entrance, whereas the orientation becomes progressively unidirectional in the plaque. Two fiber-free layers near the the mold walls are observed. A numerical simulation of mold filling assuming inelastic non-Newtonian kinetic dependent behavior is presented. The results agree well with pressure measurements. A simplified decoupled fiber motion calculation is finally proposed. A qualitative explanation of the basic phenomena which induce fiber orientation is presented.